Afro-Eurasian network

Three large parts of the world remained separate from the Afro-Eurasian network. Each had their own experiences and formed their own networks. In what specific ways did the worlds of Inner Africa, the Americas, and the Pacific follow or diverge from three broad patterns of Afro-Eurasian history from 8000 BCE to 1450 CE? What three things can we learn from the different experiences of parallel worlds?

500 word